Oil well pump



April 3, 1945. P. w. JENSON 2,372,785

OIL WELL PUMP Filed Jan. 25, 1944 3 Sheets-Sheet l I m'e'ntor I 3 'ii PETER 14 (JENSON April 3, 1945. P. w. JENSON Q 2,372,785

OIL WELL PUMP Filed Jan. 25, 1944 3 Sheets-Sheet 2 Inventor PETER 14/ UE/VS o/v April 3,1945. P. w. JENSON 2,372,7 5

OIL WELL PUMP Filed Jan. 25, 1944 s Sheets-Sheet a Inventor PETER 14/ Jam 507v B) @MQL Patented Apr. 3, i945 OIL WELL PUMP Peter W. Jcnson, Chelsea, Okla. Application January 25, 1944, Serial No. 519,663

3 Claims.

This invention relates to pumps especially de-.

signed for use in connection with oil wells, and the primary object of the invention is to provide a novel form of oil well pump having simple and .eflicient means. to trap sediment and scale that may be pumped up with the oil, therebypreventing the sedimentand scale from passing back into the working cylinder or barrel of the pump and causing damage or undue wear of'theworking valve'or working barrel.

A more specific object oi'the invention is to provide a pump of the above character wherein the oil is caused to flow in a downward path after leaving the working barrel so as to cause efiec-'- tive gravitation of the sediment and scale into the collection chamber and positively prevent its return to the working barrel. A further object of the invention is to so construct the pump that the capacity of the sediment and scale-trapping chamber may be readily in-- creased if desired.

Still another object of the present invention is to provide a pump of the above character wherein provision is made. for efiectlvel sustaining the working barrel centrally'of the trap or collection chamber and coaxial with the inlet pipe for the 7 working :barrel and the well tubing.

Other objects and features of the present invention will become apparent from the following description when considered in connection with the accompanying drawings. and the invention Figure 7 is a. horizontal section taken on line l-'! of Figure 3.

Referring m detailto the drawings, the present Pump includes a tubular casing 5 of greater diameter than and coupled at its upper and lowerends to the lower end of the wall tubing 6 and the upper end of an inlet or anchor pipe 1 by means of reducer-fittings I and 9; respectively. Positioned axially of and within the casing ,5 is, a working barrel including a main relatively long upper section In and a supplemental relatively short lower section H coupled together by a threaded coupling sleeve 12, the lower section II being threaded into the lower end portion of the reducer fitting 9. The upper end of the working barrel is sustained in spaced concentric relation to the casing 5 by means of a spider including a collar l3 having radial spaced lugs ll engaging consists in the novel form, combination and arrangement of parts hereinafter more fully de-' scribed, shown in the drawings and claimed.

In the drawings, wherein likereference charthe severalews:

' acters indicate corresponding partsthroughout.

,1 is an elevational view of an oil well pump constructed in accordance with the present invention.

the trap chamber and adjacent parts broken r '40 li'lgurez is a similar view with the casing of away and in vertical section to reveal internal 1 details, the plane of section beingsubstantiallythat indicated by the line 2-1 in Figure 1.

,Figure 3 is a central vertical sectiontaken on lineHofFlgure2.

Figure 4 is an enlarged. fragmentary vertical 'section taken'on the plane of line 4-4 of Fi ur 3, parts being omitted and parts being broken away.

the inner surface of the casing 5. The detachable threaded connections provided between the fittings 8 and.9 and the parts connected thereby permit ready assembly or disassembly of the parts.

It will be apparent that by substituting a' longer casing 5 for thatshown and a correspondingly longer barrel section II, the capacity of the chamber between the casing 5 and the barrel ll,

H may be increased if desired; 7

Tightly fitted within the, upper end of the workbarrel is a centrally apertured plug generally indicatedat l5 and including split normally expanded elements It carried by a nipple ii and capable of contracting when the plug is forced into the upper-end of the.- working barrel. provides a snug frictional fit of the plug within the barrel so that it will remain in position at the upper end of the latter. The nipple projects above the collar l3 and has a short pipe section It threaded therein. Also, the usual sucker rod 19 extends downwardly through the pipe-section l8 into the working barrel where it is equipped with the usual working valve or valved piston 20. The'sucker rod andtubing of course extend to the top of the well in the usual manner, and- V fitted and secured onthe sucker rod, as by weld ing at 2|, is a cylinder 22 having a closed-upper endbut open at the bottom end thereoi;- This cylinder}! surrounds the pipesection ll in spaced concentric relation to the latter, and the Figure 5 i a horizontal mu t taken on use "H'ofl'lsurei. p Figure 6 is a horizon 1 section taken on' line' l--l of l'ieurea 1 arrangement is; such that the oil pumped up- .wardly from the working barrel will be discharged from the upper end of the pipe section It into the cylinder 21,; and the latterwill direct the oil downwardly outside the pipe section II for discharged ;from the lower'end of cylinder 22 ab wethe plug ll. Thil'downward now of the' This soastbdirecttheoildow'nwardlyabouttbe whereby tofacilitate gravitation oiaediment oil before again passing upwardly .into and through the tubing C assists gravitation of sediment and scale from the oil downwardly into the trap chamber 23 provided between the casing l 2 l acre-res j scale from the oil into the space between the casing and the working barrel, and a' spider including a collar removably secured on and proi tin above the upper end of the working barrel and the working barrel. Thus, the sediment and l "and having radially projecting lugs contacting scale-will be prevented from returningto the working barrel for damaging or causing undue wear of the latter or the working valve 20. In

operation, it will of course be understood that the cylinder 22 moves up and'down with the i0 sucker rodjiand relative to the P l section ll, I thelatteractingas'adischargeplp iortheupper 'endoftheworkingbarrel. Thetopoftheapider' collar i3 is preierabl ibeveled inwardly and downplug is into the working barrel when .therein.- A conventional standing valve 2| is flttedinthelowerendoftheuppersectionll of the working barrel below the working valve orpistonll. Inoperatiomtheoilispmnpedinawellknown -mannerbyreciprocationoftheworking valveor= pistoni lbyactuationofsuckerrodlttheoil being drawnthroughthe standingvalveand 'forced upwardlythrwghtheworkingvalveand 25 beingsuhseque'ntlyliitedbythelatterandforced' upwardlythroughthedischargepipe ll. 'lheoil isthenoausedtonowoutwardiyanddownwardly' between the pipe II and cylinder 2!, sediment and scalebeingdepositedinthetrapehamberilas 3 intendedmannenasweilasaconipactanddura 35 hle arrangement of paris affording a simple and efllcient device. Inhandlingthepump,theworkin barreliseirectively sustainedin propel-position and prevented from lateral distortion by the casing to maintain the upper end or the working barrel centered with respect to said casing. the top of said collar being beveled inwardly and downwardly to facilitate entry of the plug into the working barrel. I

2. In a pump, an outer casing, a working barrel within and spaced from the outer casing, a

working valve operating within the working barrel, a centrally apertured plug in the upper'end wardly, as at 24, so as to facilitate entry of the 15 of the working-barrel and provided with a central upwardly projecting'discharge pipe, a sucker, I

rod extending through the discharge pipe and plug and connecting to the working valve for operating the latter, -a cylinder carried by the go sucker rod and disposed over the discharge i e,

said last-named cylinder being closed at its upper end so as to direct the oil downwardly about the discharge pipe as it is discharged from the latter, whereby to facilitate gravitation of sediment and scale from the oil into the space between the casing and the working barrel, and an inlet pipe smaller than and coupled to the lower end of the casing, said working barrel including an elongated main upper section and a relatively shorter lower section detachahly coupled to said upper section, said lower section being removably conat its lower end with the inlet pipe and 3. In a pump, an outer casing, a working barrel within the outer casing, a working valve operating within the working barrel, a centrally apertured plug in the upper end of the working barrel and provided with a central upwardly projectdischarge pipe, a sucker rod extendin m8 mwdmespmer mammal 40 through the discharge pipe and P u nd condetalls of construction illustrated and described are contemplated, such as fairly fall within the -spiritandscopeoitheinventionasclaimed;

WhatIcla'imasnewis:

. 1. Inapmnp,anoutercasing.aworkingbarrel withintheoutereasing,aworkingvalv eoperat-' mgwithintheworkingban'ehacentrallyaperhiredphigre'movablyilttedinthem rendoftheworkingbarrelandprovidedwithaeentral necting to the working valve for operating the latter, a cylinder carried by the sucker rod and disposed over the discharge pipe, said last-named upwardly projecting discharge pipe. a sucker-rod l0 nipple connected to the lower end of the dischargen peasitlsdischargedfromthe charge ,pipe and split normally expanded members moimted on the intermediate portion of the "nipple and frictlonally engaged with the inner surface of the working barrel, the lower end of said discharge pipe being threaded in the upper end of said nippl 7 PETER W. JENSON. 

